Power-transmitting mechanism.



M. KELLEY & E.4 n. sTEvENsom POWER THANSMITTING MECHANISM.

APPLICATION FILED JULY 13, 19I5.

` Patented Jan. 19m;` f

` .w1/mrow Mapa Kamen Arron/ms M. KELLEY 6L E. R. STI'VENSON.`

POWER THANSMITUNG MEcHANlsM. 4 4 APPLICATION FILED IULY I3|.I9I5

la; Arron/vers 4 N) Y O 4 4 4 4 w 54 4 @H wm? N4 mN M4 4444 4mm. 4 4 s,M A* 4 N 4 m NH 4 MN A .QN 44 H NN N\ sioned by the use of the 4p0 yPenymg IIDOKELLEYALND IDWABD RUSSELL STEVENSON, 0F OAKLAND, OREGON.

POW`EBTBANSMITTI1IG MECHANISIMI.

Spection of Letters Patent.

Patented J an. 29, 1918.

Application led July 18, 1915. Scn'al No. 39,705.

To all whom it may concern:

Be it known that we, M110 KrLLEv and Enwann BcssnLL Srrvsxsox, citizensof the United States. residents of Oakland. in the cotmty of Douglas andState of Oregon, have invented anew and useful ImprovementinPower-Transmitting.Mechanism, of which the following is aspecification.-

The principal object of our invention is to provide a novel device fortransmitting power either at full speed or at any variation thereofwhich will be. accomplished without the introduction of an elaboratesystem of gearing and thereby produce a mechanism of greater eliiciencybecause of the elimination of the consequent friction occagearing.

Another-object-is to provide a device for the transmission of maximumpower at any .variation from maximum to minimum speed, which isconnectible between a two-part line shaftone side of which constitutesthe en gine shaft. .while the other .side constitutes wer oit-take ordriven shat the speed of which latter is regulatable by" mechanismcontained internally of the device.

Another object is to provide a fluid con'- trolled power transmittingdevice which comprises a valved fluid passage through which the Huid isto be pumped by anv arrangement o pumping pistons connected to theengine shaft.. The valved passage in being'opened and closed permitseither a tree or obstructed paage to tion lin turn governs the rate ofrotatlon of the transmitting casingl in which the devices above, arehoused.'

Other-objects and the application otonr invention are hereinafter stateddescribed, specilically pointed-out Lu the ape .pended claims anillustrated in the accomdrawings in which-- l'i'igure 1 is a centralvertical longitudinal section of our device, the valved fluid passagebeing op'ento presentan .unobstructed passage for vthe fluid at whichtime no movement will be imparted tothe power olf-take shaft, thedirection of flow of the fluid indicated. Fig. 2 is a section takensubstantially on linc2-42-onFg.L

Figisasectiononthehnc-on y referring peclally to Fig. 1 of the that ourdevice y' a circular casing 1 the iluid which func-- `pistons travel/the end cover plate -means of an enlarged iiangc, is what may .be

off-take shaft' 23 which which is closed at Vits .ends by heads 2 and 3which are tightly bolted onto the casing 1 so as to make the jointsfluid tight.V The head 2 has an enlarged central bearing stud i which isrotatably mounted in of fixed bearing standards i5 and 6. The bearingstud l is centrallyY aperturedby bores of ditlerent diameters, thebabbitted bore l of lesser diameter receiving the end of the drive shaftT and forming a bearing therefor. andthe bore il of greater diameter oneof a pair receiving the stutling gland '-lc and packing nut. as shown.

The power shaft T which may be the shaftJ of an engine .extends withinthe casing l and has an integrally formed lCrank 8` and a trunnion 9which rotates in the babbitted bearing 10 formed in the end cover plate3 of the casing .1.

Disposed on the periphery of the casing 1 and atdistances 11. 12. 13 andl-i' which-are provided with suitable flanges 11, 12. 13. and 11*through which bolts are passed to fasten the respective cylinders -tothe -wall of the casing 1.

, The cylinders. justmentioned, are open at their bottom or inner endsso as to afford comnnmication between the interior of the casing 1 andthe cylinders and are provided with lateral branches of a diameter equalto that of the cylinders as shown in Fig. 1.

Mounted within the cylinders 11, 12,13,

and 1-l so as to reciprocate therein. arel pumping pistons 15, which areprovided with-wrist-pins 16 by means of which vthethe crank S by a'pistons :ivrev connected to connecting rod'l' so as to be moved up anddown, on theirf pumping strokes when 'the en e shaftx 7 is rotated. Thepistons 15 are apertured at the top as at 17 which apertures or portsare adapted to be closed when the their pumping central valve 18 whichmoves on a headed bearing pin 19 is coiled which beais against the topof the valve 18 and the head ofthe pin 19 so as to normally keep .thevalve ports 17, closed.

Registering with the lateral branch openings of the cylinders 1l, 12,13, and 14 and formed in the end plate 3 as shown in 1, are o 21which-in turn communicate'. 'th L connectims 18 seated and :the

the 1, by.

termed, the power around which pin a spring 20- 29. .Bolted 'onto 'l90'c apart, are cylinders strokes by a.

- `tioned. The construction of the shaft 23 from Where the valve chamber24 is formed, is solid as indicated in Fig. 1 and may be provided with asuitable pulley or other means for utilizing thevaried power thusconverted by the device Aand in a manner hereinafter to be explained.Formed in the cover 3 at a place midway of the openings 21 and thebearing 10, are diagonal ports 25 which offer communication between theinterior of the casing 1 and the interior of the valve chamber 24.

Reciprocably mounted in the valve chamber 24 is a control valve 26 whichat itsv rear end has stud pins 26a which project through elongated slots24 in the valve chamber 24l and into the annular slot of a Vshiftingring 27 by which means the control valve 26 is adjusted to regulate thearea of the 4valve chamber 24 so as to permit a greater or lesser flowof liuid therethrough as will also be hereinafter explained. The shaft23 has suitable bearing in the fixed bearing standard 6 which shaft 23has anannular rib 23b While the bearing stud 4 at the opposite side ofthe mechanism and adjacent thebearing standard 5 has an annularenlargement 4d by which arrangement endwise movement of the casing 1 1sprevented and consequent stability and lack of vibration lis maintained.

Operation.

The, interior of the casing l, chambers 11, 12, 13,V and 14, connections22v and valve chamber 24 is {illedwith a Huid which may be o1l. a p l fIf the drive shaft 7, which may be the shaft of an engine, is rotated,the crank 8 will also revolve andreciprocate the pistons A15 in theirrespective chambers 11, 12, 13, -and'14' and=if the control valve 26 isback at its rear position,'the re will be nothing in thevalve chamber 24to obstruct the passage of the fluid which may flow through the Lconnections 22, valve chamber 24 ports 25 back intothe casing 1, thiscirculation bein causedbythe reclprocating pistons 15 whic act 'aspumping pistons. When one piston travels outwardly' the ports 17 areclosed by means of the valve 18 and the .fluid is forced around vin thedirection of thearrows` at the top in Fig. 1 while the ports 17 of thediametrically opposed pis- -s ace behind the retreating ton will be opento admit the fluid into the piston which uid will be forced in the4irection of the dotted arrows at the bottom ofFig. 1 when that pistontravels its pumping stroke. The valve 18 on the bottom piston 15 hasjust closed since the piston is just about to return and force the Huidaround as stated above.

As long as the control valve 26 remains ,in the position shown in Fig.1, and the y will be exerting a pushing eifect against a resilient Huidabutment which will eiect a turnin of the casing l and consequently thedriven shaft 23 ina similar direction to that of the power shaft 7.

The farther the control valve 26 is moved inwardly and consequently thegreater the passage way between the connections 22 and the chamber 24becomes diminished, the` less resilient and `more resistant will thefluid abutment become and the greater`will the speed of rotation of thecasing 1 and driven shaft 23, be, since the pistons 15 cannot pump theHuid through the circulating pas sage ways fast enough to maintain thecircu ation and therefore the casing l must rotate, it being virtuallypushed aheadby the advancing piston and the interposed yetsemi-resisting fluid abutment.

Now when the valve 26 is moved in to close the chamber 24 and entirelyobstruct the fluid passage-way, the pistons 15 in traveling outwardly ontheir pumping strokes will tend to compress the fluid ahead of them,which Huid bein incompressible and also having no means 0% outlet, thepath of circulation being obstructed by the control valve 26,' now formsan unyielding abutment against which the piston vwill exert its pressureand virtually shove the casing ahead ofit and around and at the samespeed of the drive shaft '7.,

Thusait will, beissen that the driven shaft v23 can behrotated from 0speed tothe full speed of the drive shaft 7 the intermediate seriesbeing gotten by the Vshifting of the control valve 26 so as to form amore or less resistant Huid abutment against which the pistons mustexert power to maintain the circulation of the fluid.

,By the foregoing description it will be apparent that the principaladvantage being immovable will tion of a drive and a driven/shaft, acasing interposed between the shafts and connected with the drive-nshaft to rotate therewith, a crank disposed within the casing androtatable with the drive shaft, cylinders arranged within the casing andin communiI cation therewith at their inner ends, pistons operablewithin the cylinders and connected with the said crank and'providedwithoutwardly opening valves, a valvechamber in communication with theouter ends of the cylinders, and with the central portion `of thecasing, and a valve for controlling the passagew ays in communicationwith `the said valve chamber.

Q.` In a fluid tion of longitudinally alined drive and;

\ driven shafts, a caslng interposed between l operable within theshafts and journaled upon the drive i shaftand connected with the drivenshaft v ine to rotate therewith, a crank within the casand rotatablewith the" drive shaft, inner open ended cylinders disposed within thecasing and rotatabletherewith, pistons the cylindersand connected withthe said crank and provided with outwardly opening valves, a.centrallyfdisposed i valve chamber rotatable with the casing and drivenshaft and in communication"` with the outer ends ofthe cylinders andthefcen-l tral portion of the casing,and a single va1ve.

` for controlling the passageways in communi-y cation .with the valvechamber.

3.` In a' Huid transmission, the `cornbination of longitudinally alinedpower and driven shafts, the driven shaft having a valve chamber in itsinner end, a casing interposed between the shafts and journaled upon thepower shaft, and rotatable with the `driven shaft and in communicationwith the valve chamber thereof, a crank within the casing and rotatablewith the power shaft, e

transmission, the combinae open.

inner `open ended cylinders arranged within the casing and rotatabletherewith,` pistons e operable within the cylinders and connected withthe said crank, and provided with outwardly opening valves, connectingmeans between the casing and formed with passageways, and a valve forcontrolling the said passageways.

y Il. In afluid transmission, the combination valve *chamber and oflongitudinally alined power and driven shafts, the driven e ber initsrinner end, a casing interposedbeshaft having a valve chaintweenthe'shafts and journaled upon. the

power shaft, and rotatable with thedriven shaft and in communicationwith the valve chamber thereof, ,a crank within the` casing `androtatable with the powershaft, inner open ended cylinders arrangedwithin the casing androtatable therewith, pistons oper able within thecylinders and connected with the said crank, and provided with outwardlyopening valves, hollow connections` forming passageways between thelouter ends of the cylinders and the valve chamber, a valve arrangedwithin vthe valve chamber, and valve operating means mounted upon thedriven shaft.

a fluid casing, a drive shaft projecting into an opening inthe casing atone side, said shaft having a crank, a valve chamber secured tothe fluidcasing having peripheral` openings and Vfluid circulating ports, `saidports constantly communicating with the fluid casing, fluid'casinghaving lateral" openings, a fluid passage-way between said lateralopenings in the cylinders and peripheral openings in the valvechamber, ashiftable valve for di- `minishingthe` area of iuid inletgfrom the Huidpassage-way to the' valve chamber, and pistons in the cylinders andactuated by the drive shaft crank for maintaining a iiuid circulation`while the fiuid passageways are MILOKELLEY.

EDWABDIRUSSELL srEvENsor.

Witnesses: e

E. G. YOUNG, Jr., W.` M. HINEY. i.

5. In a device of the character described,`

open bottomed cylinders in the

